4
Analog pre-amp
The
analog pre-amp
is powered by the 12 Volt bipolar supply in
the LS-30 and three conductor 22 Gauge wire is perfectly
adequate for this purpose.
The analog audio output from the pre-amp should be two
shielded pairs, one for each channel. They can be individual
cables, or two pairs in one jacket. Normal audio wire such as you
would use for any other purpose is ideal.
All of the terminal strips on the analog pre-amp can be unplugged
at the pre-amp.
The video output cable from the
digital pre-amp
in the sound
head to the Dolby DA-10 or DA-20 is harder to deal with because
it is so stiff and heavy. The cables are shipped with both ends
terminated in their respective connectors. The smaller connector
(the sound head end) can be gotten through 3/4" conduit, but care
must be taken if there are many bends and particularly when
going through any conduit fittings. The connector is polarized
and will plug onto the video pre-amp only one way.
Digital pre-amp
